Anyone here used PEMFC module?
 

I have a couple of questions about setting up a pem FC on Fluent.

1. When meshing, should I mesh all bodies as one part or as different parts?

2. Why does Fluent create invisible walls? (I refer to "wall-#" as I think you guys might have seen before). Do I have to worry about them?

3. Does anyone have a model I can load on Fluent to help me with these steps and possibly others?

Thanks in advance.